Discussion

Identify the correct match between the terms in Column-I below with the definitions given in Column-II.

Column-I	Column-II
(i) AOQ	(\(\alpha\)) Number of items per lot that will be inspected on average
(ii) AQL	(\(\beta\)) A lower bound on the incoming quality for which a lot is to be rejected
(iii) ATI	(\(\gamma\)) Proportion of defective items remaining in the lot after inspection
(iv) RQL	(\(\delta\)) An upper bound on the incoming quality for which a lot to be accepted

Answer: A

The correct match is i-γ, ii-δ, iii-α, iv-β.

AOQ, average outgoing quality: the proportion of defectives remaining in lots after inspection (γ).
AQL, acceptable quality level: the poorest incoming quality still considered acceptable, an upper bound for acceptance (δ).
ATI, average total inspection: the number of items per lot inspected on average (α).
RQL, rejectable quality level (LTPD): the quality at or beyond which lots should be rejected, a lower bound for rejection (β).

The other codes swap AQL and RQL or move ATI and AOQ to the wrong definitions.

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